- Letter
Time evolution of a decaying quantum state: Evaluation and onset of nonexponential decay
Phys. Rev. C 107, L021602 – Published 15 February, 2023
DOI: https://doi.org/10.1103/PhysRevC.107.L021602
Abstract
The method developed by van Dijk, Nogami, and Toyama for obtaining the time-evolved wave function of a decaying quantum system is generalized to potentials and initial wave functions of noncompact support. The long time asymptotic behavior is extracted and employed to predict the timescale for the onset of nonexponential decay. The method is illustrated with a Gaussian initial wave function leaking through Eckart's potential barrier on the half-line.
